Tell us a little more about the jeep and how you use it - tire size, any other mods. Do you use it in the winter as a DD, is it a mall crawler?

I would be more likely to go with something like a Detroit Softlocker or a selectable locker if I had the factory LS carrier I needed to replace. 3:43 suck any way you look at it unless you are running stock tires.

LS is Limited slip. there are many limited slip options available for a Dana 44. Among the best is the Trutrac which is gear driven and does not require any special oil or friction modifier and is pretty much transparent on the street. The strongest is the Dana-Spicer Power Lok which is a friction clutch type with 4 spider gears and does require limited slip compatible oils and sometimes friction modifier depending on how tightly it is setup. Others include the Dana Trac Lok and Auburn to name a couple more. In my experience, the Trac Lok is the least effective.